Edward and Eleanor married at the monastery of Las Huelgas, Burgos on 1 November 1254. Several of her relatives came to England soon after her marriage. Henry III of England spent much money on her relatives. This made the people not like her, even though she could not stop it.

In the 1260s, the Second Barons' War started between Henry III and his barons. This divided the kingdom. Eleanor supported Edward. Edward was captured at Lewes and imprisoned. Eleanor was honourably kept at Westminster Palace.

Henry of England, born before 6 May 1268 and died on the 16th of October 1274. Lived for 6 years.

Eleanor, (18 June 1269 – 29 August 1298). Buried on the 12th of October, 1298. She was betrothed to Alfonso III of Aragon, who died in 1291 before the marriage could take place, and in 1293 she married Count Henry III of Bar, by whom she had one son and two daughters. Lived for 29 years.

Daughter, (28 May 1271 Palestine – 5 September 1271). Some sources call her Juliana, but there is no evidence for her name. Lived for less than 1 years.

Alphonso, Earl of Chester, born 24 November 1273, died 19 August 1284, buried in Westminster Abbey. He is sometimes given the title "Earl of Chester" by modern popular writers, but there is no evidence that that title, or any other, was ever his. Lived for 11 years.

Eleanor of Castile was born to the Castilian King, Ferdinand III and his wife, Queen Joan of Ponthieu in the early 1240s. When her father died, her step brother, Alfonso X, ascended to the throne where he and King Henry III arranged her marriage. In Spain, at age 10-12 she was married to King Henry’s son, Edward, who was only 15 at the time in 1254. She went with her husband, Lord Edward of England, who was leading an important crusade in 1270. As a gift to celebrate their wedding, her step brother gave Edward the region of Gascony. Edward also gained the lands of Montreuil and Ponthieu through Eleanor. When Eleanor first moved to England, King Henry III “Ordered that her apartments be furnished "in Castilian fashion" to make her feel more comfortable.” [1] In 1264 she was moved to France for her safety when war broke out and did not return until about a year later. In 1270 she went on the 8th crusade with Edward to the Holy Land and returned in August 19, 1274 to be crowned. Since Eleanor was foreign, many of her subjects did not like her. On November 28, 1290, Eleanor died of a fever, leaving Edward to write, "I loved her dearly during her lifetime . . . . I shall not cease to love her now that she is dead."